Four
-1
Section::::History.:India.

Binary number
238686
Four
four
-1
Section::::History.:China.

Binary number
238686
four
-1
Section::::Abstract.
Hexadecimal
13263
four
-1
Section::::History.:Complex numbers.

Number
21690
4
-1
Section::::History.:Egypt.

Binary number
238686
4
-1
Section::::Abstract.
Hexadecimal
13263
4
-1
Section::::Abstract.
Number
21690